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【单选题】
下列哪种情况可引起系统误差( )。
A.
天平零点突然有变动
B.
天平砝码被腐蚀
C.
滴定时从三角烧瓶瓶中溅失少许试液
D.
以上均不属系统误差
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参考答案:
举一反三
【单选题】钢水定氧是以下列哪种物质作为电解质的()
A.
ZrO2+MgO
B.
Mo+MoO2
C.
[O]+Mo
D.
ZrO2+MoO2
【单选题】在中国名山中,五岳占有显著的位置,徐霞客在游览了黄山后发出了“黄山归来不看岳”的感慨,你知道五岳中的“中岳”指的是()。
A.
泰山
B.
华山
C.
恒山
D.
嵩山
【单选题】Did you ask whose computer ______________ ?
A.
that blue one was
B.
is that blue one
C.
it was that blue one
D.
that blue one is
【简答题】A.blue B.a blue C.the blue D.an blue
【单选题】与大隐静脉伴行的皮神经是:
A.
股外侧皮神经
B.
隐神经
C.
闭孔神经
D.
髂腹股沟神经
E.
髂腹下神经
【单选题】This article deals with the natural ________, which is most interesting to everyone.
A.
phenomenas
B.
phenomenons
C.
phenomena
D.
phenomenon
【判断题】黄山归来不看岳,说明了黄山在中国名山中的地位比五岳还有高
A.
正确
B.
错误
【单选题】- Moo, moo! What’s it? - It’s a ____.
A.
dog
B.
cow
C.
duck
【单选题】How much money is being spent on this Winter Games?
A.
At least $15 billion.
B.
At least $50 billion.
C.
At least $13 billion.
D.
At least $7 billion.
【单选题】How much is spent on new product development every year?
A.
about 8 percent of the gross sales
B.
about 10 percent of the gross sales
C.
about 8 to 10 percent of the gross sales
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